This course provides participants with the basic understanding of how logarithms are used in sound level measurements.  Specifically, this course provides the participant with the necessary basic mathematical understanding to remove background sound levels from equipment sound levels so that Noise Criteria and Room Criteria ratings can be calculated.

Step-by-Step Instructions:

1.  Download and print the PDF Exercises 1-5 prior to watching the video presentation.  You willl want to work on the Exercises throughout the presentation.

2.  Watch the presentation and then answer the 5 Multiple Choice questions to earn your Certificate of Completion.  You have to answer 4 out of the 5 questions correctly.

3.  The 2nd PDF is a reference to the equations and how to do the math.  It is recommended that you also download and print the equations sheets as a reference guide.